Journal
CHEMOSPHERE
Volume 258, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2020.127374
Keywords
In-BiOBr1-xIx; Photocatalysis; Organic dyes; Furfural; Degradation
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Funding
- Ministry of Science and Technology, Taiwan [MOST 108-2218-E-011012]
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Photocatalysis is extensively investigated as a green, efficient and promising technique for environmental remediation. In this study, a series of template free In-doped BiOBr1-xIx photocatalysts have been successfully prepared at room temperature and characterized by various methods. Complete degradation of negatively charged methyl Orange, positively charged Rhodamine B and Methylene Blue organic dyes, and neutral and colorless non-dye organic compound of furfural was attained. The flat band potential offered the possibility of reduction of dissolved O-2 to O-2(-) in the conduction band while the trapping experiment identified the (O-2) is the main radical species followed by h(+) for the photodegradation. In-BiOBrI-0.4 had an excellent photocatalytic degradation activity which could be due to the synergetic effect between metal ion doping and solid solution formation. It further promotes visible light-harvesting ability and photoinduced charge carrier separation efficiency. The order of the reaction rate was determined and the mechanism was proposed. This work can lay a base for the design of effective photocatalyst toward environmental remediation. (C) 2020 Elsevier Ltd. All rights reserved.
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